The final chapter in one man’s first journey to write an interpreter.
Jackson spent the next month or so adding smaller features and fixing bugs. At last, The Interpreter Version 1.0 was ready for release. He named his language Simfpl: Simple Interpreted Mathematically-Oriented Functional Programming Language. He put the source code on the internet for everyone to see.
EDIT 7/1/13: I’ve moved the code to GitHub.